KR20100091543A - Slope face protection engineering method with corn fabric vegetation mat - Google Patents

Abstract

PURPOSE: A slope side of a bank protection method using an environment-friendly corn fiber vegetative mat is provided to prevent the loss of soil by installing a vegetative mat. CONSTITUTION: A slope side of a bank protection method using an environment-friendly corn fiber vegetative mat is as follows. A vertical pile(1) is arranged and fixed on an inclined foundation at a river side at a regular interval. A vegetation frame(5) is formed by fixing a horizontal rod(3) between fixed piles. The vegetative mat is installed in front of the vegetative frame to be extended toward the top from the bottom. A base layer is formed by pouring rocks and gravel in the inside of the vegetative mat. The foundation layer is formed on a foundation by stepping the top of the vegetative mat.

Description

Slope face protection engineering method with corn fabric vegetation mat}

The present invention is a surface protection method for strengthening the surface or soft ground around the river / embankment using geosynthetic fibers, especially in the coating surface reinforced with vegetation mat that is naturally decomposed in the soil, which can be installed on a steep terrain It relates to a surface protection method using a corn fiber vegetation mat.

Since the surface around rivers / banks is frequently scoured or lost by running water, it is common to construct a revetment block and a gabion.

However, the revetment block is made of concrete and is considered to be incompatible with the environment, and the gabion is a method that requires a lot of manpower, but it is often avoided to be lost or damaged due to its low resistance to earth and sand during flooding. In recent years, geotextiles with reinforcement to withstand earth pressure cover the surrounding surfaces of rivers / banks to prevent scour and loss.

In addition, some types of geotextiles contain grass, grass, and wild flower seeds, and the vegetation mat form protects the grass by grass, grass, and wild flowers germinating and intertwining with the roots while covering the surface. Is being provided.

Vegetation mats can be easily installed in a short period of time, and greening is performed immediately after construction, and it is evaluated as an eco-friendly construction method that is particularly suitable for regions such as rivers / banks.

Co-inventor, Kim Yeon-sul of the present invention has proposed Utility Model Registration No. 382114 as a vegetation mat in which the seeds of plants are installed.

The vegetation mat is formed by forming a mat layer on the upper surface of the pulp medium on which the seeds are placed, and again covering the PE net, the coir net, and the rhomboid coating network on the upper surface of the mat layer.

In this structure, the mat layer moisturizes to help germinate the pulp medium, and the PE net, the coir net, and the ridge coating network provide reinforcement to withstand earth pressure to prevent scour or loss. In the soil, the mat layer covers the pulp medium, and thus has a disadvantage in that the germination failure is often caused by the adverse effect of blocking the oxygen supply to the seed of the plant.

In order to reduce the germination failure rate, the co-inventor of the present invention, Kim Yeon-sul, uses a vegetation mat having a layer structure made of metal mesh, coir net, geogrid, coir mat, peat moss, coco peat, and pulp through the Korean Utility Model No. 437329. I have suggested.

The proposed vegetation mat is capable of early germination because the pulp contains soil moisturizer and fertilizer and the germination seeds are attached, and the peat moss and coco peat act as the soil on the germinated seeds to allow them to grow and grow in a short period of time. In addition, the coir mats keep moisture necessary for germination, and the geogrid, coir nets, and metal mesh reinforce the coated mats / nets to resist earth pressure, and prevent damage from external forces. In overflow, the mat / net will be supported against the soil flow.

However, in the vegetation mat of the above-described structure, the coir mat is stiff and difficult to handle, and furthermore, since it spreads a certain thickness of top soil such as pit moss and coco peat, when the worker carries the product or installs it on site. There is a structural problem that is difficult to handle and hinders efficient work.

On the other hand, eco-friendly materials that do not emit harmful substances in the soil are representative of natural substances that are corroded by bacteria in the soil, and among the natural substances, cotton, wool, etc. are known to be manufactured from fibers and nonwoven fabrics. However, these are expensive and therefore uneconomical for geotextiles.

Poly lactic acid, which is obtained by fermenting plant starch such as corn, sweet potato, beet, and sugar cane, has been noted as being a relatively inexpensive and nonwoven fabric as a natural substance.

Fermentation of plant starch produces D-lactic acid and L-lactic acid. When d-lactic acid is high in content, the melting point is lowered, so that only L-lactic acid is polymerized and synthesized to obtain polylactic acid. It is a bio-based polymer made of bio-derived raw materials, and it is attracting attention as a garment material, textile material, and biodegradable plastic raw material.In Korea, the fabric and cotton products (LOT No .: 6202D: hereinafter referred to as cotton) are manufactured by Huvis. Marketed).

Corn wool is slightly weaker in heat resistance compared to polyethylene terephthalate, which is a representative material of synthetic resin for textiles, and its properties such as absorptivity, quick drying, biodegradability, and elasticity are not comparable to non-woven fabrics. Since it does not cause contamination, it is an optimal nonwoven fabric material for geotextiles.

However, since it is cheaper than cotton in terms of cost, but more expensive than synthetic nonwoven fabric, it is not economically useful as a raw material for geotextiles.

As such, researches on vegetation mats that decompose naturally in soil are progressing. However, the surface protection of vegetation mats of all kinds can be carried out only on the sloped terrain, and on the terrain that is almost perpendicular, It is common to build concrete revetment blocks despite the ecological advantages of vegetation mats due to the risk of decay by action.

It is an object of the present invention to provide a surface protection method using a corn fiber vegetation mat that can be carried out easily and quickly in a terrain where the slope of the surface is steep and does not cause soil contamination.

The present invention for realizing the above object, in order to establish a vegetation frame by fixing a plurality of vertical piles equally arranged to the lower side of the legal surface in the terrain of the steep slope of the river / embankment, and attaching a plurality of horizontal bars between each pile. Vegetation framework installation process, the vegetation mat is laid inside the vegetation framework, the front part is laid with sufficient margin to extend upward from the lower side of the surface, and the base layer is formed by administering rock or gravel inside the vegetation mat. After preparing, the foundation setting process of covering the foundation layer with the front part of the vegetation mat, the soil and compaction process to form the desired terrain by laying and compacting the soil over the front part of the vegetation mat covering the foundation layer, the seed spreading for greening To the corn fiber nonwoven fabric which was made by overlapping the first nonwoven fabric with the second nonwoven fabric in two layers and punching the needles into one, the mat body, Is carried out by decomposing PE net, coir net and 6 mat coating step of gakmang is fixed to the floor of the appended vegetation mat, with the fill and compaction pins fixed to cover pyeolchimyeonseo along the surface topography of the composition in the process order.

According to the present invention of the above-described configuration has the following effects.

In the present invention, the foundation layer formed of rock gravel or the like is located inside of the vegetation mat, and the vegetation mat is very firmly installed because the front part of the vegetation mat covers the upper part of the foundation layer and is buried in the ground so that the flow velocity is urgent. Even rivers / banks can be installed so as not to be lost, so there is an advantage of allowing vegetation greening of the surface without resorting to conventional concrete blocks.

In addition, since the lower part of the vegetation mat is supported by the vegetation framework, the fill layer can be formed to form a vertical plane even in a terrain with a steep slope slope, and thus has the advantage of actively coping with the topographical changes of rivers / banks.

In addition, the corn fiber non-woven fabric, the mat body made of coir is a natural decomposition of the ground over the years, because it is provided as a compost to the green vegetation on the ground, there is also the advantage that does not cause soil pollution after construction.

In addition, the corn fiber nonwoven fabric is formed by overlapping two sheets of the first nonwoven fabric and the second nonwoven fabric and includes seeding seeds between both nonwoven fabrics. There are also savings.

In addition, since the greening seeds inside the corn fiber nonwoven fabric have a good supply of air and moisture to promote germination, the greening success rate is high, and since almost all the elements are corroded in the ground, the growth is promoted by nutrients. The greening effect of rivers / banks is excellent.

The coir mat body coats and protects the corn fiber nonwoven fabric while supplying the corn fiber nonwoven fabric with moisture in the air obtained in contact with the atmosphere, thereby helping to germinate green seed.

Photodegradable PE nets and hexagonal nets have the effect of firmly supporting vegetation mats without being scoured or lost, even in fast water streams.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The surface protection method according to the present invention is carried out in the order of the vegetation framework installation step, the foundation setting step, the fill and compaction step, and the mat coating step.

[Vegetable frame installation process]

In the terrain where the slope of rivers / banks is urgent, as shown in FIG. 1, a plurality of vertical piles 1 are arranged in equal parts at the lower side of the legal surface, and a plurality of horizontal bars 3 are attached and fixed between the piles 1. Plant vegetation framework (5).

[Base setting process]

The vegetation mat (2) is installed inside the vegetation framework (5) as shown in FIG. 2, and the front portion thereof is extended so as to have a sufficient margin upward from the lower side of the surface, and then into the vegetation mat (2). Rock or gravel is administered to form a base layer 7 and the base layer 7 is covered with the front of the vegetation mat 2.

[Fill and Compaction Process]

By laying soil over the front of the vegetation mat (2) covering the base layer (7) and then using a combination roller or tandem roller compaction roller as shown in Fig. Form the desired terrain.

When ground reinforcement is needed in this process, ground grouting and shock treatment can be performed in parallel, and in order to support the vegetation frame 5 in a state capable of withstanding earth pressure, the anchor is buried in the ground and the vegetation is roped. The frame (5) can also be bound and supported.

 [Matte coating process]

The vegetation mat 2 is spread out and covered on the terrain formed by filling and compaction, and the fixing pin 11 is fixed to each element to fix the vegetation mat 2 to the ground.

The vegetation mat 2 is composed of a corn fiber nonwoven fabric 4, a mat body 6, a photodegradable PE net 8, a coir net 10, and a hexagonal net 12, as shown in FIG.

The corn fiber nonwoven fabric 4 is a polylactic acid obtained by polymerizing and synthesizing L-lactic acid obtained by fermenting plant starch with a monomer. The corn fiber nonwoven fabric 4 is obtained from corn wool sold as LOT No .: 6202D by a company called Huvis in Korea.

Corn cotton is slightly weaker in heat resistance compared to polyethylene terephthalate, which is a representative material of synthetic resin for textiles, and its properties such as absorbency, quick drying, biodegradability, and elasticity are not inferior to be used as non-woven fabrics. It does not cause soil pollution.

In the present invention, the corn fiber nonwoven fabric 4 has a structure in which the first nonwoven fabric 4a and the second nonwoven fabric 4b are overlapped in two layers and needle punched to be integrated into one.

Moreover, the seeding 14 for greening is scattered and attached to the 1st nonwoven fabric 4a before needle punching.

The corn fiber nonwoven fabric 4 may be a mixture of jute or coir fibers in an appropriate amount.

The seed 14 interposed between the first nonwoven fabric 4a and the second nonwoven fabric 4b is preferably a plant that grows well on the lakeside, such as grass seeds, flower seeds, reed seeds, or the like.

Corn fiber nonwoven fabric (4) is a natural substance that is completely decomposed after about two years in the ground, so there is no fear of soil contamination. In addition, the seed 14 is not only provided with the temperature, humidity, and oxygen necessary for germination inside the corn fiber nonwoven fabric 4, but also facilitates rooting, so that the reinforcing effect of the ground caused by the plant appears quickly.

Since the mat body 6 is to be in direct contact with air by covering the corn fiber nonwoven fabric 4, a coir mat body made of 100% palm fiber is used to absorb and supply moisture in the air.

In particular, the Coir mat body has a strong water resistance and can protect the corn fiber nonwoven fabric 4 while remaining intact in water until it is naturally decomposed by bacteria. Is provided.

The photodegradable PE net (8), the coir net (10) and the hexagonal net (12) keep the mat body (6) in close contact with the ground by a fixing pin (11) and at the same time scour or It will protect you from loss.

In particular, since the photodegradable PE net 8 is less corroded than the mat body 6 and the coir net 10, the mat body 6 is completely decomposed to protect the soil until it is soiled.

The outermost hexagonal net 12 can support the corn fiber nonwoven fabric 4 and the mat body 6 more firmly, and also the corn fiber nonwoven fabric 4 in steep terrain where the inclination is almost perpendicular. And the mat body 6 are supported in a tensioned state so as not to cause a full stomach phenomenon (a phenomenon in which the earth pressure is applied to the middle part).

Therefore, the vegetation mat of the illustrated configuration is suitable for the protection of the surface covering in steeply steep terrain and the greening construction to promote the restoration of the waterfront ecology.

In addition, the plants germinating and growing inside the corn fiber nonwoven fabric 4 are grown through the gap formed in the mat body 6 and grow to the ground, as shown in FIG. In addition to the vegetation in the side, as well as greening, corn fiber nonwoven fabric (4) and mat body (6), photodegradable PE net (8), coir net (10), hexagonal net (12) of the plant It is entangled with stems and roots to form a solid ground reinforcement structure.

In addition, since the components that are naturally decomposed in the vegetation mat 2 is supplied to the green plants as compost, vegetation without soil contamination is possible.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the vegetation framework installation process of the surface protection method which concerns on this invention.

2 is a diagram showing a basic setting step of the surface protection method according to the present invention.

3 is a view for explaining the filling and compacting process of the surface protection method according to the present invention,

4 is a view for explaining a mat coating step of the surface protection method according to the present invention,

5 is a structural diagram showing a configuration of a vegetation mat according to the present invention.

6 is a diagram showing an example of vegetation greening by the surface protection method of the present invention.

<Description of the symbols for the main parts of the drawings>

1: vertical pile 2: vegetation mat

3: horizontal bar 4: corn fiber nonwoven

5: vegetation framework 6: mat body

7: base layer 8: photodegradable PE net

9: Fill layer 10: Coir Net

11: fixed pin 12: hexagonal

14: seed for recording

Claims (2)

In order to establish a vegetation framework (5) by arranging and fixing a plurality of vertical piles (1) equally in the lower side of the surface in a steep slope of rivers / banks, and attaching and fixing a large number of horizontal bars (3) between each pile (1). Vegetation frame installation process; The vegetation mat (2) is installed inside the vegetation framework (5), and the front part is installed with sufficient margin so as to extend upward from the lower side of the surface, and the rock or gravel is administered to the inside of the vegetation mat (2). After the base layer (7) is prepared, and the base setting step of covering the base layer (7) with the front portion of the vegetation mat (2): Filling and compacting process to form the soil in the desired terrain by filling and compacting the soil over the front portion of the vegetation mat (2) covering the base layer (7); Mat body 6, photodegradable PE on corn fiber nonwoven fabric 4, in which two layers of the second nonwoven fabric 4b are laminated on the first nonwoven fabric 4a, on which the greening seeds 14 are scattered, and needle punched and coalesced into one. The vegetation mat 2 with the net 8, the coir net 10, and the hexagonal net 12 attached is covered with the fixing pin 11 while spreading along the surface of the terrain formed in the fill and compaction process. A method for protecting the surface using corn vegetation vegetation mat, characterized in that it is carried out in the order of the mat coating process to be fixed to. The method according to claim 1, The corn fiber nonwoven fabric (4) is a legal protection method using a corn fiber vegetation mat, characterized in that the jute or coir fibers are mixed.

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